Pyrolysis characteristics and kinetics of biomass residuals mixtures with lignite

Vamvuka, D; Kakaras, E; Kastanaki, E; Grammelis, P

dc.contributor.author	Vamvuka, D	en
dc.contributor.author	Kakaras, E	en
dc.contributor.author	Kastanaki, E	en
dc.contributor.author	Grammelis, P	en
dc.date.accessioned	2014-03-01T02:42:19Z
dc.date.available	2014-03-01T02:42:19Z
dc.date.issued	2003	en
dc.identifier.issn	0016-2361	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30943
dc.subject	Biomass	en
dc.subject	Devolatilisation	en
dc.subject	Kinetics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Lignite	en
dc.subject.other	Pyrolysis	en
dc.subject.other	Reaction kinetics	en
dc.subject.other	Devolatilization	en
dc.subject.other	Biomass	en
dc.title	Pyrolysis characteristics and kinetics of biomass residuals mixtures with lignite	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/S0016-2361(03)00153-4	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0016-2361(03)00153-4	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	Biomass residues in the Mediterranean region come mainly from agricultural and agro-industrial activities and forest byproducts. The paper presents the results of kinetic parameters and main devolatilisation characteristics of three biomass materials, when these are used either alone or in conjunction with Greek lignite. Namely, olive kernel, forest and cotton residues were pyrolysed in a thermogravimetric analyser, under dynamic conditions. The effect of material particle size and heating rate was investigated both on the pyrolysis behavior and reaction kinetics, over the temperature range of 25-850 degreesC. Furthermore, experiments with blends of lignite and biomass were conducted under the same conditions at the lower heating rate. The biomass materials presented higher thermochemical reactivity than lignite. Their decomposition was successfully modeled by three first-order independent parallel reactions, describing the degradation of hemicellulose, cellulose and lignin. No significant influence of the particle size was detected, both on the devolatilisation characteristics and kinetics. The effect of the heating rate on the pyrolysis behavior was more pronounced for biomass materials rather than lignite. A comparison between slow and fast heating rate tests reveals a small displacement of the DTG profiles to higher temperatures. It was concluded that such 'solid biofuels' could support the combustion of poor coals, because of the faster and in much higher quantity release of volatile compounds. (C) 2003 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Fuel	en
dc.identifier.doi	10.1016/S0016-2361(03)00153-4	en
dc.identifier.isi	ISI:000184858300016	en
dc.identifier.volume	82	en
dc.identifier.issue	15-17	en
dc.identifier.spage	1949	en
dc.identifier.epage	1960	en